City comparison · time difference and converter
Haiphong vs Tokyo time difference and converter
Tokyo is 2 hours ahead of Haiphong right now. Haiphong sits in Vietnam on Bangkok; Tokyo sits in Japan on Tokyo. They are roughly 3,600 km apart (2,237 mi), a flight of about 5h 14m. Haiphong's metro holds around 2.6 million people; Tokyo's around 37.4 million.
Haiphong
Tokyo
Best meeting times today
Open converter →Slot 1
09:00 / 11:00
Haiphong / Tokyo
Both inside business hoursSlot 2
10:00 / 12:00
Haiphong / Tokyo
Both inside business hoursSlot 3
11:00 / 13:00
Haiphong / Tokyo
Both inside business hours24-hour comparison heatmap
Each row is one hour in Haiphong. Green rows are inside business hours in both cities; amber means only one side is at their desk; grey rows fall outside business hours in both.
Public holidays in November 2026
Culture Day
Tokyo, Japan · 文化の日
Tue, Nov 3
Labour Thanksgiving Day
Tokyo, Japan · 勤労感謝の日
Mon, Nov 23
Travel context
Great-circle distance
3,600 km
(2,237 mi)
Approximate flight
5h 14m
850 km/h cruise + 1h taxi/climb/descent
Jet lag
2h
Roughly 1 day to adjust per timezone crossed
Convert any specific time
The heatmap gives you the shape of the day. If you need to convert one specific hour, say a customer call or a release window, open the converter with both cities already loaded.
Open in converter →Frequently asked questions
Working between Haiphong and Tokyo
The difference between Haiphong and Tokyo is not really a number, it's a daily rhythm. Tokyo is 2 hours ahead of Haiphong on the clock today, but the lived version is that Tokyo is wrapping up the working day while Haiphong is still in the morning, and the overlap people actually use is narrow. That gap, more than the raw offset, is what teams have to design around.
In Haiphong, the working day picks up earliest in the financial districts- Haiphong's downtown core wakes early and breaks for lunch at the usual hour. The mood in Tokyo is its own story: Shibuya's office workers leave around 19:00, often heading to izakayas, then home on the last train. If you are scheduling between the two, the heatmap above marks the rows where both patterns line up.
Daylight saving is the other thing to keep an eye on. Vietnam either observes DST or holds a fixed offset year-round; Japan either follows its region's DST pattern or stays put all year. When the two changes are weeks apart, the offset between Haiphong and Tokyo is one hour off the usual for that stretch, a cliff that catches recurring calendar invites unless your calendar app rebases them automatically. Pin the meeting to a city, not an offset, and the tool handles the rest.
For travellers, the 5h 14m flight is the short version of the story. The longer one is jet lag: roughly one day of adjustment per timezone crossed, which means a trip across the 2-hour gap costs about 2 groggy days on each side. Pilots and cabin crew swear by morning sunlight and an early walk; whatever your routine, the wall-clock numbers above are the source of truth for your first morning in the new city.